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Visual illusions, their causes, characteristics and applications (1922)
Luckiesh, Matthew, b. 1883 · New York, D. Van Nostrand company · leaf 244
CAMOUFLAGE 229 … Figs. 95 and 96. Dlustrating the use of models by the Niavy Depart- ment in developing the geometrical-illusion for ships.Optical illusions
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
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